<template>
  <div class="login_container">
    <!-- 登录盒子 -->
    <div class="login_box">
      <!-- 头像 -->
      <div class="avatar_box">
        <img src="@/assets/img/sexHeadPic.jpeg">
      </div>
      <!-- 登录表单 -->
      <div>
        <el-form
          label-width="0"
          class="login_form"
          :model="loginForm"
          :rules="loginFormRules"
          ref="loginFormRef"
        >
          <!-- 用户名 -->
          <el-form-item prop="username">
            <el-input
              prefix-icon="iconfont icon-user"
              v-model="loginForm.username"
            ></el-input>
          </el-form-item>
          <!-- 密码 -->
          <el-form-item prop="password">
            <el-input
              prefix-icon="iconfont icon-3702mima"
              v-model="loginForm.password"
            ></el-input>
          </el-form-item>
          <!-- 按钮 -->
          <el-form-item class="btns">
            <el-button
              type="primary"
              @click="submitForm"
            >登录</el-button>
            <el-button
              type="info"
              @click="resetLoginForm"
            >重置</el-button>
          </el-form-item>
        </el-form>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: 'Login',
  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      loginFormRules: {
        username: [
          { require: true, message: '请输入登录名', trigger: 'blur' },          // trigger自动触发为鼠标事件
          {
            min: 3,
            max: 10,
            message: '登录名长度为3到10个字符',
            trigger: 'blur'
          },
        ],
        password: [
          { require: true, message: '请输入密码', trigger: 'blur' },          // trigger自动触发为鼠标事件
          {
            min: 6,
            max: 15,
            message: '密码长度为6到15个字符',
            trigger: 'blur'
          }
        ]
      },
    }
  },
  methods: {
    resetLoginForm () {
      // ref属性中的   this指向父级组件  通过$refs
      // console.log(this);
      this.$refs.loginFormRef.resetFields()
    },
    submitForm () {
      //   valid  为布尔值判断登录情况
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) { return }
        const { data: res } = await this.$http.post('login', this.loginForm)
        console.log(res); // 结构赋值   避免出现data.data
        if (res.meta.status !== 200) {
          return this.$message.error('登录失败' + res.meta.msg)   // console.log('登录失败');
        }
        this.$message.success('登录成功')
        console.log(res);
        // 设置登录token令牌验证机制
        // 项目中除了登录界面的api外的其他api  必须登录以后才能访问
        // 将token储存在sessionStorage中  只在当前网站打开时有效
        window.sessionStorage.setItem('token', res.data.token)
        // 路由导航到后台主页
        this.$router.push('/home')
      })
    }
  },
  computed: {},
  watch: {},
  filters: {},
  components: {},
  created () { },
  mounted () { }
}
</script>

<style lang='less' scoped>
.login_container {
  // background-color: #2b4b6b;
  background: url('../assets/img/pic2.jpeg') no-repeat center;
  background-size: 100%;
  height: 100%;
  .login_box {
    width: 450px;
    height: 300px;
    // background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    box-shadow: 0 0 10px rgb(54, 54, 54);
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    .avatar_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;
      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
    .login_form {
      position: absolute;
      bottom: 0;
      width: 100%;
      padding: 0 20px;
      box-sizing: border-box;
      .btns {
        text-align: center;
      }
    }
  }
}
</style>
